.search_sort li {
  float: left;
  width: 25%;
  background-color: #eee;
}
.search_sort li a {
  font-size: 12px;
  color: #666;
  display: block;
  text-align: center;
  height: 30px;
  line-height: 30px;
}
.search_sort li.active a {
  color: orange;
}
.lt_product {
  position: relative;
}
.lt_product .loading {
  width: 50px;
  height: 50px;
  border: 3px solid #006699;
  position: absolute;
  top: 100px;
  left: 50%;
  transform: translate(-50%);
  animation: running 1s infinite;
}
@keyframes running {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
